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EB632 датащи(PDF) 106 Page - Freescale Semiconductor, Inc

номер детали EB632
подробное описание детали  Functional Differences Between MSC8101 (Mask 2K42A) and MSC8103 (Mask 2K87M)
PDF  112 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

EB632 датащи(HTML) 106 Page - Freescale Semiconductor, Inc

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Functional Differences Between MSC8101 (Mask 2K42A) and MSC8103 (Mask 2K87M), Rev. 2
106
Freescale Semiconductor
Bootloader Program
move.l
#$b8000000,d1;BD STATUS(E=1,W=1,I=1,L=1)|DATA Lenght = 0
nop
;due to restriction 6.4.4.a.2
move.l d1,(r1)
;Write BD STATUS + lenght
move
r5,d1
;d1 receive Buffer ptr offset
nop
add
d1,d4,d1; added buffer base to d1
nop
move
d1,r3
nop
;due to restriction 6.4.4.a.2
move.l r3,(r1+$4);Write RX Buffer Pointer
;**************************************************
;Set Start on i2COM
;**************************************************
i2com_ move.w #$8181,r3
move.b r3,(r6+I2COM)
;I2COM[STR]=1 => Start transmission
move.l r6,d6
move.l #I2CER,d1
add d1,d6,d6
move.l d6,r3
;
r3<-I2CER Adrress
move.l #TIMEOUT,d1
read_i2cer
move.l #SERBIT16,d15
;**************************************************
; We insert a delay here in order to have
; less BUS activity
;**************************************************
ser_cnt
sub#$1,d15
tsteq d11; check flag if watchdog disabled
jt tst_no_wd
deceqa r15
nop
ift jsr watchdog_handle
tst_no_wd tsteqd15
jf ser_cnt
nop
;;Decrement Counter if zero goto dead_i2cer
sub
#$1,d1
tsteq
d1
jt dead_i2cer
nop
; due to restriction 6.4.4.a.3
move.b (r3),d6
;Read I2CER
nop
cmpeq.w
#$0000,d6
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
I2cer == 0 ??



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